Choke asssebly
New piston from after marked kit. Rest of the parts only cleaned and polished.
New gasket from aftermarket kit
Final mounting of the choke lever connected with shaft for all three carburetors.
Dismounting of carburetors
Before starting the disassembly process.
Disassembly:
Important to organize the parts. Use boxes, plastic bags and label well to keep track of which parts belongs to the Left, Center and Right carburetor.
Splitting the carbs (pictures usorted at the moment )
Test run
Have done some test runs and it all looks good. The first one was not, had to change the points and adjust the timing once more. Now it works fine. I’m so pleased to have the bike on the road again 🙂
First startup
At last, almost two years since I started the engine rebuild it was time to verify if all my posts on the blog were done correctly. So far so good. Final answer will come after the first test run. Getting the license plate next week. Most of the work on the motor was done after I completed the “Man Cave” and the Man Cave was essential for a successful ending. Old and blind I need light and space for such a job. Hopefully this blog can be at inspiration for others working with the same GT 750 issues and pleasures 🙂
Put the kettle on:
Click on the images for detailed view
No decals are used, all hand painted by my nephew Thomas Grenasberg.
Motor into the frame
First some preparation. All four mounting bolts were labeled and shown on a picture taken before the dismounting.
Using the small MC lifter to lower the wood frame.
Well in place on the large MC lifter
Torque settings : 35 Nm
Cylinder head + oil pump
Cylinder head:
Tightening order (red and green numbers on the bolts ) of cylinder head bolts. Red colour = 35Nm, Green colour = 18Nm
Click on the image for detailed view.
Oil pump and cover :
SRIS system
According to the information in fig 1 the SRIS tube from the front side should go from the left cylinder inlet ( see the label C in fig.2) to the center cylinder SRIS outlet port. The SRIS type 2 system. Center to Right and Right to Left, all according to fig.6-13 from the manual
Fig.1
Fig.2
From left cylinder inlet
Fig.3
To the Center cylinder SRIS check valve outlet.
Fig.4
Fig.4 shows the two remaining tubes. From Right to Left (red arrow) and Center to Right (yellow arrow ) .
Cover on the left hand side
Did the mounting of the cover on the left hand side today. The cover will also house the timing plate, points and capacitors.
I was advised to add some silicone gasket in addition to the new paper gasket, please see the pictures.
Add silicone.
Don’t add silicone where I have the yellow marker. I did it wrong and had to wipe it off after the mounting.
Mount the gasket. I had both alignment studs in the cover and therefore I put the gasket as shown.
Add silicone gasket.
To be able to align the side cover in its correct position the pin must hit the hole in the disk rotating the timing camshaft. Be gentle and don’t use force. Rotate a bit to left and right until the cover snap on.
I still had the original screws. Did some polishing on the heads before the mounting.
Done !
Cylinder in place
The difficult job is done, got the cylinder block down onto the pistons without breaking any of the piston rings. Got a helping hand from a friend, was too scared to do it alone.
Hmm, rusty bolts. A new kit has been ordered from UK. The attempt to refurbish the old ones was not a success. Let’s hope I soon get the parts and can mount the cylinder head the next weekend.